Except that every time someone is questioned about their luggage they argue and complain and say “But I always bring this luggage” and this conversation delays boarding. The policy wouldn’t need policing if people just complied with the rules. 

There’s about 20 other airlines that allow dogs in the cabin, presumably all have overcome most of the issues raised in the thread. If passengers choose to break the rules inflight or not follow crew instructions, then naturally it will be managed in the usual way with the authorities on ca...

The staff have to do a training program to be able to manage the new safety risk. Also explains the delay to start.

Well I've read all comments and IMHO there are three solid suggestions made by ABT readers:1. Make checked luggage come out on the carousel much quicker - Additional equipment and labour costs2. Install bigger overhead lockers - Cost over a large fleet would be extreme3. Change limits to one 10kg...

Yeah? Tell that to the people who have been injured by bags falling out of lockers onto them, and cabin staff off work on compo because they injured their backs trying to move your heavy bag to fit another one in the locker quickly so you don't get delayed.